Analysis for Behavior of Particles to Be Ground between Grinding Balls in Wet Ball Milling

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  • KUSHIMOTO Kizuku
    Dept. Environmental Studies for Advanced Society, Graduate School of Environmental Studies, Tohoku University
  • ISHIHARA Shingo
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • KANO Junya
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

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Other Title
  • 湿式ボールミリングにおける媒体ボール間の砕料粒子挙動の解析
  • シッシキ ボールミリング ニ オケル バイタイ ボール カン ノ サイリョウ リュウシ キョドウ ノ カイセキ

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<p>Behavior of particles to be ground between two grinding balls in wet ball milling was analyzed by DEM-CFD coupling simulation. Effects of dimeter of the particles, diameter of grinding balls and colliding speed of two grinding balls on the volume of particles sandwiched between two grinding balls were investigated. The volume was assumed as an index for progress of grinding. The volume decreased with a decrease in the diameter of the particles. In case of larger particles, the volume increased with an increase in the diameter of grinding balls. On the other hand, in case of smaller particles, the volume increased with a decrease in the diameter of grinding balls. Higher collision speed between two grinding balls enhanced the volume. In order to perform fine grinding more efficiently, it is important to use smaller grinding balls and make them collide each other at high speed.</p>

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